Also a sysadmin.

> Shared email Blocklists are the norm, not the exception

Shared blocklists in IT are managed by industry professionals for the purpose of safety from malicious activity and there are vetted processes for being removed from days lists. False positives happen, but you aren't hung out to dry if you get hit, you just go through the process and clear your name.

Most of this "Fediblock" nonsense is several orders of magnitude less reliable, and filled with toxic people pursing personal grudges. There's no process to clear your name, and I've personally watched multiple admins and their entire communities be publicly mocked and told they "don't owe you anything" for merely asking why they were blocked, let alone how to remedy the situation.

These are not remotely equivalent and anybody who trusts them is a fool. The Fediverse has a serious problem with vile, bitter people who would not be out of place running an HOA. If we are going to emulate the blocklists common in IT, we need professionals in charge of it, not nosy busybodies.

Read my other reply, I'm not talking about email blocklists, my reference is to email providers doing that, which is extremely rare and done with explicit intent and good reason.

Secondly, while I won't disagree there's some vile content out there on the Fediverse, do you trust someone else to make that decision for you? Why would you let someone else decide what is and isn't vile for you and those using your instance? Better yet, how would you feel if some popular instance decides you were the vile one, and because it was a common instance to use for blocking references, your instance is now cut off from a good chunk of the Fediverse?

This is exactly the sort of nonsense that swept Twitter with shared Blocklists, and the potential for negative impact on the Fediverse is even worse from it. Don't let others decide make decisions for you just because it's easy, as it doesn't absolve you of responsibility when something goes wrong.